Firishta's History (Gulshan-i Ibrāhīmī) 23.1.6

23.1.6

7th. Alla-ood-Deen Hoossein. During his lifetime, Eiz-ood-Deen Hoossein paid tribute to the Suljooks, as well as to the Ghiznevides. When Eiz-ood-Deen Hoossein died, his sons (entitled the Seven Stars) separated into two divisions: the one gave origin to the dynasty of kings at Bamyan, called also Tokharistan and Mohatila; and the other, to the Ghoory dynasty at Ghizny. Of the latter race was Kootb-ood-Deen Mahomed (entitled the King of the Mountains). He married the daughter of Sooltan Beiram, King of Ghizny, and having founded the city of Feiroozkooh, made it his capital. In the vicinity of this place, having inclosed with a wall a spot of ground about two parasangs in circumference, as a hunting park, he assumed all the dignities of a sovereign. At length he was induced to attack Ghizny. Sooltan Heiram obtaining intimation of his intentions, contrived to get him in his power, and eventually poisoned him. This is the origin of the feuds between the houses of Ghoor and Ghizny. Seif-ood-Deen Soory, the fifth son, who had accompanied his brother, escaped the snare, and fled to Ferooz-kooh, where, putting himself at the head of his brother's army, he marched towards Ghizny to revenge his death, as we have seen in the history of that kingdom. Ghizny fell, and Sooltan Beiram fled to India. He returned again in the winter, when the troops of Seif-ood-Deen were mostly gone to Feroozkooh and Ghoor, from whence they could not easily return, on account of the roads and deep snow.